2-Methyl-2-hepten-6-on-1-al acetals

Abstract

2-METHYL-2-HEPTEN-6-ON-1-AL ACETALS AND A METHOD FOR THE PRODUCTION OF THESE COMPOUNDS. The acetals are obtained by reacting the acetals of 2-methyl-4-halo-2-buten-1-al with an alkali compound of an ester of acetoacetic acid and eliminating, by means of an alkali, the alkoxycarbonyl group from the intermediate obtained. 2-methyl-2-hepten-6-on-1-al is obtained from the acetals by acid hydrolysis. The products are perfumes having a pleasant fruity odor and are intermediates for advantageous synthesis of the natural orange aromatics and orange odorants α-sinensal and β-sinensal.

I claim: 
     
       1. A compound of the formula (I): where R 1  and R 2  each is an alkyl group of one to eight carbon   
     
     
       2. A compound as set forth in claim 1 wherein R 1  and R 2  are selected from the group consisting of methyl and ethyl.